What does idiom 'hippo in a haystack' mean?Reminds me of a joke I heard when I was about 10 years old: Why do elephants paint their toenails red? So they can hide in cherry trees. Have you ever seen an elephant in a cherry tree? No? That's how well it works.

I wanted sb to win ==? Sb is the entity I wanted to winThe point is, the way to fix ambiguity is to reword and the most direct rewording is the wording I provided. Having said that, @LittleEva is right that given the proper context (We both know that an award is being given to a website) saying, "StackExchange is the website I wanted to win." there is little chance of being interpreted the wrong way. Nobody thinks you are in a position to win a website, so nobody will think that's what you meant.

How does 'contingent' mean 'subject to chance'?if two things are in motion on their own trajectories they might touch at some point in the future or they might not and unless you take the time and energy to really analyze it, their touching will appear to be a chance occurrence.